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Wang P.,National M arine Food Quality Supervision and Testing Center | Zhao H.,National M arine Food Quality Supervision and Testing Center | Zhou Y.,National M arine Food Quality Supervision and Testing Center | Xu Z.,National M arine Food Quality Supervision and Testing Center | And 2 more authors.
Chinese Journal of Chromatography (Se Pu) | Year: 2010

A novel method was developed for the determination o f dichlorobromomethane in water using headspace-trap gas chromatography/mass spectrometry (GC/MS). Three parameters o f headspace-trap including thermostatic temperature, time and cycle number were optimized by orthogonal experiment analysis. Dichlorobromomethane in water samples was analyzed under the optimized conditions of 70 < and 20 minutes with the cycle number o f two. The results showed that the calibration curve was linear in the range of 0.1 - 10.0 |xg/L, and the correlation coefficient was 0. 999 1. The detection lim it was 0. 03 |xg/L. The average recovery was 83. 1 % -111. 3% with the relative standard deviation (RSD) not more than 5. 2% (n = 6). This method is rap id, sensitive and reproducible for the routine detection of the low concentration o f dichlorobromomethane in water. Source

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